DELL Security Advisory
Published Date: April 30, 2026
CVE: CVE-2025-33242
Advisory Summary
❗ Security Alert: Medium Severity Vulnerability in NVIDIA B300 MCU Firmware
Dell has released an important security update addressing a medium-severity vulnerability (CVE-2025-33242) in the NVIDIA B300 microcontroller unit (MCU) firmware. This issue affects multiple PowerEdge server models, including the Dell PowerEdge XE9780, XE9785, XE9780L, and XE9780LAP. The vulnerability could potentially be exploited to compromise the firmware integrity or impact system stability, making timely patching critical.
IT professionals managing Dell PowerEdge infrastructures should prioritize applying this firmware update to safeguard against exploitation risks. Remaining proactive with firmware patches is essential to maintaining the security and reliability of data center environments.
⚠️ Action Recommended: Review the advisory promptly and implement the update across affected servers to mitigate potential threats.
Reference: Vendor Advisory